diff --git a/src/checkpoints.h b/src/checkpoints.h
index 9d9fc6b82..ff3150c5e 100644
--- a/src/checkpoints.h
+++ b/src/checkpoints.h
@@ -22,13 +22,13 @@ namespace Checkpoints
 
     typedef std::map<int, uint256> MapCheckpoints;
 
-struct CCheckpointData {
+/*struct CCheckpointData {
     MapCheckpoints mapCheckpoints;
     int64_t nTimeLastCheckpoint;
     int64_t nTransactionsLastCheckpoint;
     double fTransactionsPerDay;
-};
-    bool CheckBlock(const CCheckpointData& data, int nHeight, const uint256& hash);
+};*/
+    bool CheckBlock(const CChainParams::CCheckpointData& data, int nHeight, const uint256& hash);
 
     
 //! Return conservative estimate of total number of blocks, 0 if unknown